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Development of novel environmentally-friendly refractory material

A refractory, environmentally friendly technology, applied in the development of new environmentally friendly refractory materials, to achieve the effect of improving structural flexibility and thermal shock stability, excellent thermal shock stability, and buffering thermal stress

Inactive Publication Date: 2019-01-15
久裕电子科技(江苏)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of development of new environment-friendly refractory material, to solve the problem of the prior art that proposes in the above-mentioned background technology

Method used

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Embodiment Construction

[0006] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the process steps in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0007] The invention provides a technical solution: the development of a new type of environmentally friendly refractory material, mainly composed of magnesia dolomite bricks and magnesia aluminum spinel bricks, the magnesia dolomite bricks have good chemical compatibility with cement clinker The magnesia-aluminum spinel brick has good thermal shock resistance and corrosion resistance, but poor kiln skinning property. The new environment-friendly refracto...

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Abstract

The invention discloses development of a novel environmentally-friendly refractory material. The novel environmentally-friendly refractory material is mainly composed of magnesia-dolomite bricks and magnesia-alumina spinel bricks. The magnesia-dolomite bricks have good chemical compatibility and excellent kiln coating adherence for cement clinker, but have poor thermal shock resistance and poor hydration resistance. The magnesia-alumina spinel bricks have good thermal shock resistance and corrosion resistance, but have poor kiln coating adherence. The second-generation novel environmentally-friendly refractory material, namely the novel environmentally-friendly refractory material prepared by introducing hercynite into magnesia bricks has good structural toughness, strong alkali and salt resistant and cement clinker corrosion resistance and good kiln coating adherence, can effectively prolong service life in a firing zone, and is a new-generation chrome-free refractory material used for the firing zone of a cement kiln and suitable for China's national situation. The key point of the product is that the synthesis of the hercynite raw material, addition amount, addition mode and related process conditions will affect the performance of the product.

Description

technical field [0001] The invention relates to the field of environment-friendly materials, in particular to the development of a new type of environment-friendly refractory material. Background technique [0002] With the rapid popularization of new dry process cement production technology in my country, my country's cement industry has developed rapidly. In 2012, the total cement output reached 2.18 billion tons, accounting for about 55% of the world's total output. In the 1960s and 1970s, magnesia-chromium refractories were widely used in the firing zone of new dry-process cement kilns because of their good kiln skin hanging properties and chemical erosion resistance of cement clinker, and achieved good results. However, due to the combination of Cr2O3 components in the bricks with kiln gas, alkali and sulfur in kiln materials during the use of magnesia-chrome bricks, toxic Cr6+ compounds are formed. Coupled with the sulfur carried in the raw fuel, another water-soluble...

Claims

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Application Information

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IPC IPC(8): C04B35/66F27D1/06
CPCC04B35/66C04B2235/3206C04B2235/3222C04B2235/3272C04B2235/80F27D1/06
Inventor 詹浩
Owner 久裕电子科技(江苏)有限公司
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